Ryne,
There probably will be plenty of alternatives, soon, but as this kit has just been released the decal manufacturers are probably still working on them
I believe that the decals in the kit contain Rudels markings, he is the most famous exponent with the tank busting stuka and was the most decorated of all arms in the German forces. The winter camo dipicted on Bill's Stuka is Rudels machine, it is quite unique and, in my opinion the best looking winter camo to be found on any aircraft. So you could do a lot worse than using the kit decals with the winter scheme as shown on Pixilaters model.
Mal